A waitress Agnes who fears her violent ex-husband Jerry gets to know a man named Peter and moves in with him. Peter confesses her that a bug was transplanted into his body for a medical experiment when he served a military at Gulf War. Agnes gets to share his fear, and as they are bearing their panicky and isolated experiences, their delusion build up their own secret world. Although the caller is not identified, the endless telephone ring sounds freaky along with the air conditioning noise and cricket chirping. Characters´ conversations are always hard to believe, and suddenly the film reminds of the fear from The Exorcist(1973) by William Friedkin when the two protagonists go extremely crazy. Through the film, so carefully structured that likely to cause claustrophobia, Friedkin allows audiences to realize the reality where they never can believe in anything anymore. Since 9·11, people have not trusted their country, government or even a next door neighborhood, which might potentially be a threat to themselves at some point. Such an obsessive psychological state of the current generation is expressed in the dreadful mood of the film.